Happy to share that I have successfully opened my OCBC Singapore account with just my IC and Passport.
The process of applying through the app is a bit a pain in the ass, as needs to do several times for the app to accept my IC. Tips, the ic can be slightly outside the rectangle.
Took about 3 working days for the account to be approved. Was given Global Savings Account and Statement Savings Account.
Initial deposit required is just SGD1000, it can be from your Singaporean bank account or Malaysian bank account. I already have Maybank SG account. So this is very seamless.
Despite the T&C showing initial deposit for non-resident Statement Savings Account is SGD20k. I just needed to deposit SGD1k. Not sure if this only applies for Malaysians or what.
Regardless, even if the fall below fee for non-resident Statement Savings Account which is 20k is imposed as per T&C (no fee for first year), don't worry, we can go around this.
Once you have access to the OCBC SG online banking, you can immediately apply for other accounts like OCBC 360 (minimum balance 3k) or OCBC Frank (minimum balance 1k), Monthly Savings account (minimum balance 500) or other OCBC SG accounts. I prefer OCBC 360. I will close Statement Savings Account after this.
So for all Malaysians residing in Malaysia, with no SG pass whatsoever. Right now we have 3 easy options for SG bank accounts (Maybank, CIMB and OCBC), everything done online, super easy.
For those who are interested to apply OCBC SG account, can use my referral code -------- . You will get SGD15, and I will get SGD15.

You are good.